I agree, this whole mess was just ugly. I imagine they decided the only way to get working clearance from a wall mounted disco would mean cutting down that bush and the homeowner wasn't going for it. I am still not sure I would OK it hanging on the machine. (110.3(B)?) Every condenser book I have seen says "do not install the switch on the unit, " (from the Goodman book. that is what this one looks like) Maybe a post? Of course the 1900 box is just a cherry on top.
The unit could be a American Standard / Trane, which in my opinion are just good scrap metal because of the louvers over the coils & the way they are designed, it makes them VERY difficult to clean the coils. Hate those junkers.